Blue Sea Systems
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Blue Sea Systems 7721 Fuse Block Safety SEA/AMG
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Blue Sea Systems 7721 Fuse Block Safety SEA/AMG
Blue Sea Systems 7721 Fuse Block Safety SEA/AMG
Blue Sea Systems 7721 Fuse Block Safety SEA/AMG
Item #: 18114691

Blue Sea Systems 7721 Fuse Block Safety SEA/AMG

88% of respondents would recommend this to a friend

Item #: 18114691

GMD 3889

GMD 4173

Price Details

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*All items will import from US

7%

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Order now and get it around Monday, September 28
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Safety Design
The Blue Sea Systems 7721 Fuse Block features a robust safety design that prevents accidental contact with live circuits, ensuring maximum safety for marine environments.
Modular Flexibility
With a modular design, the fuse block allows for easy installation and convenient customization, catering to various electrical configurations and setups in marine applications.
Durable Construction
Constructed from high-quality materials, this fuse block promises longevity and reliability, effectively withstanding harsh marine conditions and providing excellent performance over time.

Product Details

Shop the Blue Sea Systems 7721 Fuse Block Safety SEAAMG at Ubuy The Gambia. Ignition protected for boats. Sealed cover for marine environment. Insulating cover meets ABYC/USCG requirements.
  • Ignition protected for safe installation on gasoline or diesel powered boats
  • Sealed cover provides protection for fuses in harsh marine environments
  • Insulating cover meets ABYC and USCG insulation requirements
Brand NameBlue Sea Systems
Model7721
UPC632085077211 696582459314 995889633541 611104332241 012302849973
Global Trade Identification Number00632085077211
Number of Items1
ManufacturerBlue Sea Systems
Included ComponentsFUSE BLOCK SAFETY SEA/AMG
Item Type NameFUSE BLOCK SAFETY SEA/AMG
Item Weight2.4 ounces (68.04 grams)
Part Number7721-BSS
Voltage32 volts
Mounting TypeDIN Rail Mount
Current Rating300 A
Item Dimensions7.75 x 4 x 2 inches (19.7 x 10.2 x 5.1 cm)
Material Typeiron
Colorblack
Specification MetAbyc/Uscg Insulation Requirements
BrandBlue Sea Systems
Item dimensions L x W x H7.75 x 4 x 2 inches (19.7 x 10.2 x 5.1 cm)
Materialiron

What's in the box

FUSE BLOCK SAFETY SEA/AMG

Who Should Buy?

Suitable For
  • Marine Enthusiasts

    Ideal for boaters needing reliable fuse protection for multiple electrical circuits in their marine environments.

  • DIY Electrical Projects

    Great for hobbyists and professionals working on custom wiring projects requiring organized and safe fuse connections.

  • Electrical Safety

    Recommended for users prioritizing safety, ensuring that equipment is protected from potential overloads or electrical shorts.

Not Suitable For
  • Casual Users

    Not suitable for individuals without prior electrical knowledge or experience in using fuse blocks safely.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the Blue Sea Systems 7721 Fuse Block?

    Answer: The Blue Sea Systems 7721 Fuse Block is designed to protect your electrical circuits by providing a reliable fuse distribution solution. It is especially useful in marine applications where electrical safety is paramount. This fuse block allows you to easily manage up to 12 circuits, using a clear cover to prevent accidental access. In scenarios like boat wiring or custom vehicle electrical setups, this block helps you avoid overloads, ensuring the longevity of your devices.
  • Question: How many circuits can I connect to the Blue Sea Systems 7721 Fuse Block?

    Answer: The 7721 Fuse Block accommodates up to 12 circuits, which offers ample capacity for most marine or automotive applications. This feature enables you to power multiple accessories without the clutter of wiring. For instance, if you’re setting up a boating system that includes navigation lights, pumps, and electronics, this fuse block facilitates a neat and organized installation, making troubleshooting much easier.
  • Question: What type of fuses does the Blue Sea Systems 7721 use?

    Answer: The Blue Sea Systems 7721 Fuse Block is compatible with standard ATO/ATC fuses, which are common in automotive and marine applications. This flexibility allows you to easily source replacement fuses from most hardware or automotive stores. This ensures that in case of a blown fuse, you can quickly replace it and maintain uninterrupted functionality of your devices, which is crucial during extended outings.
  • Question: Is the Blue Sea Systems 7721 Fuse Block waterproof?

    Answer: While the Blue Sea Systems 7721 Fuse Block is designed for marine environments, it is important to note that it is not completely waterproof. However, it is built to resist moisture and corrosion, making it suitable for use in boats and other wet applications. To enhance its protection, it is advisable to install it in a dry location or use additional enclosures for extra safety, especially in areas prone to splashes.
  • Question: What materials are used in the construction of the Blue Sea Systems 7721 Fuse Block?

    Answer: The 7721 Fuse Block is constructed from high-quality plastic and copper, ensuring durability and excellent conductivity. The use of these materials means the fuse block can withstand the rigors of marine environments while providing efficient power distribution. This robust construction is critical in applications where failure could lead to potential hazards or downtime, giving users peace of mind during adventures.
  • Question: Can the Blue Sea Systems 7721 Fuse Block be mounted in multiple orientations?

    Answer: Yes, the Blue Sea Systems 7721 Fuse Block can be mounted in various orientations, offering flexibility in installation. Whether you prefer horizontal or vertical installation, you can optimize space and accessibility according to your specific needs. This adaptability is particularly useful in tight spaces often found in boat installations where the arrangement of components must be efficiently managed.
  • Question: Does the Blue Sea Systems 7721 Fuse Block come with a cover?

    Answer: Yes, the Blue Sea Systems 7721 Fuse Block includes a transparent cover that protects the fuses while allowing you to easily monitor their status. This feature is critical in preventing accidental contact with live circuits and keeps the unit neat and organized. In settings like a marine vessel, this enhances safety, as it minimizes the risk of water intrusion while providing a clear view of the fuse condition to address any issues proactively.
  • Question: What is the maximum amperage per circuit for the Blue Sea Systems 7721?

    Answer: Each circuit of the Blue Sea Systems 7721 Fuse Block is rated up to 30 amps, allowing you to power a variety of accessories safely. This rating accommodates many devices found in marine and automotive applications, such as lights and pumps. This ensures that you can implement the fuse block in custom electrical systems without exceeding safe operational limits, thus preventing damage to both the fuse block and connected devices.
  • Question: What applications is the Blue Sea Systems 7721 Fuse Block suitable for?

    Answer: The Blue Sea Systems 7721 Fuse Block is ideal for marine, automotive, and RV applications. Its versatility means you can utilize it for powering everything from navigation lights and bilge pumps in boats to high-powered gadgets in vehicles. By integrating this fuse block into your electrical systems, you enhance organization and safety, making it easier to manage and troubleshoot electrical issues.
  • Question: Where can I buy the Blue Sea Systems 7721 Fuse Block Safety SEAAMG in The Gambia?

    Answer: You can conveniently purchase the Blue Sea Systems 7721 Fuse Block Safety SEAAMG from Ubuy. Ubuy offers a wide selection of marine accessories and electrical components that cater to your needs. By shopping through Ubuy, you can access reliable product information and customer support to make an informed decision.

Blue Sea Systems Fuse Blocks Editorial Review

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The Blue Sea Systems 7721 Fuse Block is a highly popular choice as a fuse holder, with a high rating of positive customer reviews. It is waterproof, has a snap-on cover, and accepts MEGA or AMG fuses, but not ANL ones. The product dimensions are 4.92" Long x 1.51" wide, with a cover of 5.12" long. The fuse block is Considered a great replacement for the Blue Sea Heavy Duty ANL Fuse Holder Model 5503, but its capacity only goes up to 300 amps. Customers have mentioned that it should be selected based on the size and length of the cable customers are using rather than the inverter itself.

Customer Reviews & Ratings

153 customers ratings
  • 5 Star
    93%
  • 4 Star
    4%
  • 3 Star
    2%
  • 2 Star
    1%
  • 1 Star
    0%

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Pros

  • Waterproof
  • Snap-on cover
  • Good replacement for the Blue Sea Heavy Duty ANL Fuse Holder
  • Accepts MEGA or AMG fuses

Cons

  • Does not accept ANL fuses

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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

GMD 3889

GMD 4173

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